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Chemistry: Challenges and Solutions

Radioactivity (animation)

The term “radioactivity” was coined by scientist Marie Curie to describe the steady emission of rays she observed in uranium and thorium. Along with her husband Pierre, Curie accurately proposed what was a revolutionary idea for its time—that this behavior was the result of something happening deep inside the atom.

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Chemistry: Challenges and Solutions


Produced by the Harvard-Smithsonian Center for Astrophysics. 2014.
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